/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package controller;

import DAO.Util.KetquaDAO;
import Pojo.Ketqua;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author ducquyen
 */
@WebServlet(name = "ThongKeKetQuaThicontroller", urlPatterns = {"/ThongKeKetQuaThicontroller"})
public class ThongKeKetQuaThicontroller extends HttpServlet {

    /**
     * Processes requests for both HTTP
     * <code>GET</code> and
     * <code>POST</code> methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        request.setCharacterEncoding("UTF-8");
        PrintWriter out = response.getWriter();
        try {
            String action = request.getParameter("Action");
            if (action != null) {
                if (action.equals("View")) {
                    int tongSoDong = KetquaDAO.LayDanhSachKetQuaThi();
                    int soDongTrongMotTrang = 20;
                    int dongBatDau = 0;
                    int trang = 1;
                    if (request.getParameter("Trang") != null) {
                        trang = Integer.parseInt(request.getParameter("Trang"));
                        dongBatDau = (trang - 1) * soDongTrongMotTrang;
                    }
                    

                    List<Ketqua> kq = KetquaDAO.LayDanhSachKetQuaThi(dongBatDau, soDongTrongMotTrang);

                    HttpSession session = request.getSession(true);
                    session.setAttribute("thongKeKetQuaThi_ketQuaThongKe", kq);

                    int tongSoTrang = tongSoDong / soDongTrongMotTrang;
                    if (tongSoDong % soDongTrongMotTrang != 0) {
                        tongSoTrang ++;
                    }
                    request.getRequestDispatcher("/ThongKeKetQuaThi.jsp?Trang="+trang+"&TongSoTrang="+tongSoTrang).forward(request, response);
                }

            }
        } finally {
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
